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Consider a small raindrop and a large raindrop falling through the atmosphere. Compare their terminal speeds. What are their accelerations when they reach terminal speed?
a gun has a spring constant of 10N/cm. when the gun is inclined upward by 30 degree to the horizontal a 10 g ball is shot to the height of 2 m above the muzzle of the gun
Four 1.50 Volt cells are connected in series to a 13 ohms light bulb. If the resulting current is 0.47 Amp, find what is the internal resistance of each cell
An AC adapter for a telephone answering machine uses a transformer to reduce the line voltage of 120 V to a voltage of 5.00 V. What is the power drawn from the electric outlet, if the transformer is assumed to be ideal
Two concentric current loops lie in the same plane. The smaller loop has a radius of 3.0 cm and a current of 12 A. The bigger loop has a current of 20 A. What is the radius of the bigger loop
Rocket-powered sleds are used to test the human response to acceleration. If a rocket-powered sled is accelerated to a speed of 444 m/s in 1.8 seconds, then what is the acceleration and what is the distance that the sled travels?
A helium-neon laser (wavelength = 630 nm) is used in a single-slit experiment with a screen 7.5 m away from the slit. what is the width of the central bright fringe on the screen
a sewing machine needle moves with a rapid vibratory motion rather like shm as it sews a seam. suppose the needle
A large wheel is coupled to a wheel with half the diameter. How does the rotational speed of the smaller wheel compare with that of larger wheel? How do the tangential speeds at the rims compare (assuming the belt doesn't slip).
A small rubber wheel is used to drive a large pottery wheel. The two wheels are mounted so that their circular edges touch. Thesmall wheel has a radius of 2.0 cm and accelerates at the rate of7.4 rad/s2, and it is incontact with the pottery wheel (..
At what angle of incidence will green light (g = 560 nm) be most strongly reflected? Imagine the film has the minimum thickness that can produce these reflections.
Earth's radius is 6.38 × 106 m, and it completes one revolution every day. What is the tangential speed of a person standing on the equator
a very large nonconducting plate lying in the xy-plane carries a charge per unit area of 5theta. a second such plate
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